Schematic illustrating contrasting resource allocation strategies between CO2 assimilation and PSII heat tolerance. (A) CO2 assimilation is prioritized over PSII heat stability and (B) PSII heat stability is prioritized over CO2 assimilation. (C) Temperature response curves for CO2 assimilation and PSII quantum yield for two species exhibiting contrasting responses, as presented in Fig. 4C. The schematic highlights shifts in ATP and NADPH investment between PSII maintenance and Rubisco activation energy. The large curved arrow indicates the direction of resource allocation involving ATP, NADPH, and the energetic costs of D1 and turnover of other proteins. Red colour represents higher temperatures, whereas blue indicates lower temperatures

#Tropical #trees can't simultaneously raise photosynthetic heat optima AND PSII stability: resource trade-off! Inverse Topt, Anet-T5 link in #WesternGhats warns of #warming limits #PlantPhys #Climate #Photosynthesis #TropForRes
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